Tracy was an innocent, in love and pregnant by the son of a wealthy family. She is sent to prison for a crime she did not commit. When she gets out, she proposes to take revenge on the people who framed her.
An alien takes the form of a young Wisconsin widow's husband and makes her drive him to his departure point in Arizona. Distrustful government agents, along with a more ambivalent scientist, give pursuit in hopes of intercepting them.
Two storm chasers on the brink of divorce must work together to create an advanced weather alert system by putting themselves in the cross-hairs of extremely violent tornadoes.